Feedebick clatjss



(No Model.)

IF. OLAUSS.

' SH'EARS.

No. 362,572 Patented May 10, 1887.

I llVVE/VTOR a,

wmvEssm- UNITED STATES PATENT QE IcE.

FREDERICK GLAUSS, OF ELIZABETH, NE\V JERSEY.

SHEARS.

SPECIFICATION forming part of Letters Patent No. 362,572, dated May 10,1887.

Application filed January 28, 1887. Serial No. 225,782. (No model.)

To all whom it may concern.-

Be it known that l, FREDERICK CLAUss, of Elizabeth, in the county ofUnion and State of New Jersey, haveinvented certain new and usefulImprovements in Shears, of which the following is a full, clear, andexact description.

My invention relates to that class of shears or scissors in which thecutting-blades are held against each other by means of aspring actingupon a loose bolt'at the pivot-joint of the blades. I

The object of my invention is to produce a uniform pressure between theblades at their cutting-edges.

The invention consists in the combination of the cutting-blades with apivot-pin passing loosely through the cutting-blades anda'springplateheld on one end of the said pivot-pin and pressing against onecutting-blade.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a side elevation ofa pair of shears provided with myimprovement. Fig. 2 is a plan view of the same. Fig. 3 is a sectionalplan view of part of the same on the lines 00 m of Fig. 1. Fig. at is aplan view of the pivotpin. Fig. 5 is an end elevation of the same. Fig.6 is a side elevation of the same. Fig. 7 is a face view of thespring:plate. Fig. 8 is an enlarged sectional view of the same on thelines y y of Fig. 7. Fig. 9 is an enlarged crosssectional view of thesame on the lines 2 z of Fig. 7.

Through the shear-blades A and B passes at their pivot-joint thepivot-pin O, which is not rigidly connected to either blade, and isprovided with the head 0, the shank O and the flat head 0, which is cutunder to form a shoulder, G.

The spring D is formed of one piece of steel and is provided in itscenter with a slot, D, corresponding in size to the flat head (3 of thepivot-pin C. At right angles to the slot D, and at each side of thesame, is formed a depression or indentation, D", in which is held andrests the flat head 0 when the several parts are adjusted and in theirproper places. The spring D, which is preferably in the shape of .adisk, is also provided with a number of radial slots, D which commenceat the periphery and extend inwardly a suitable distance, and then joina circular slot, D, which terminates about halfway between the twosucceeding radial slots D The two corresponding slots D and D* form aprong or flap, D which is bent inwardly, as shown in Figs. 3, 8, and 9.

The several parts are put together by first passing the pivot-pin 0through the blades A and B at their pivot and by then placing the springD, with its prong D held inwardly, on the head 0 so that the latterpasses through the slot D. The spring D is then given one quarter-turn,so that the flat head rests in the indentations D" on the outside of thespring D and the prongs or, flaps D rest with their free ends on theblade A. The spring D is now locked on the pivot-pin O, and bears uponthe blade A at several points which are equidistant from the center ofthe pivot-pin G. The spring D presses against the flat head 0 of thepivot-pin O and against the blade A,

Having thus described my invention, I'clainr as new and desire to secureby Letters Patent The combination, with apair of shear-blades, of apivot-pin provided on one end with a head resting against oneshear-blade and on its other end with a fiat head forming a shoulder,and a spring having a central slot for the passage of the said fiathead, and indentations for the retention of the said flat head, the saidspring also provided with inwardly-extending prongs resting on one ofthe said shear-blades, substantiall y as herein shown and described.

FREDERICK OLAUSS. Witnesses:

CHAS. NIDE, E. F. DREWSEN.

